Home / 20,045.12-27,659.04-12,587.84

Finding the Fourth Proportional to 20,045.12, 27,659.04 and 12,587.84

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Solution

The fourth proportional to 20,045.12, 27,659.04 and 12,587.84 is: 17,369.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045.12 : 27,659.04 = 12,587.84 : x
  2. Step 2: Convert to fraction form
    20,045.12/27,659.04 = 12,587.84/x
  3. Step 3: Cross multiply
    20,045.12x = 27,659.04 × 12,587.84
  4. Step 4: Simplify right side
    20,045.12x = 348,167,570.07
  5. Step 5: Solve for x
    x = 348,167,570.07/20,045.12
  6. Step 6: Final answer
    x = 17,369.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.